What is a good solvent for recrystallization of solid?
The latter technique can lead to small crystals or powder. The best way to remedy this is to do a slow recrystallization. To do this you must use two solvents that will evaporate over a long period of time. One solvent must be very volatile and must be able to easily dissolve your compound at room temp. The other must be less volatile and your compound must be insoluble in this solvent. Note that this solvent must have the potential for dissolving the impurities in your compound. To perform the recrystallization, dissolve your compound in the “good” solvent and then add about the same amount of the “bad” solvent. Over a period of time, the “good” solvent should evaporate leaving your crystallized product in the “bad” solvent without any impurities.
